DATA1220-55, Fall 2024
2024-11-20
Typically visualized using a scatter plot
Explanatory/independent/predictor variable on the \(X\) axis
Response/dependent/outcome variable on the \(Y\) axis
Which image shows a positive relationship between the explanatory and response variables?
Which image shows a strong relationship between the explanatory and response variables?
A correlation ranges from -1 to 1
A perfect negative correlation equals -1
A perfect positive correlation equals 1
What’s the response variable?
Response Variable: Percent of people in poverty
What’s the explanatory variable?
Explanatory variable: Percent of people who graduated high school
Describe the relationship between these 2 variables.
Correlation: strong, negative
Which of the following is the most likely correlation? A. 0.60 B. -0.25 C. -0.75 D. 0.35
Which of the following is the most likely correlation? C. -0.75
Do ice cream sales cause drowning incidents?
. . .
. . .
DATA1220-55 Fall 2024, Class 31 | Updated: 2024-11-20 | Canvas | Campuswire